/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

import { Pipe, PipeTransform } from '@angular/core';
import { EventPropertyUnion } from '@streampipes/platform-services';

@Pipe({ name: 'displayRecommendedPipe' })
export class DisplayRecommendedPipe implements PipeTransform {
    transform(
        properties: EventPropertyUnion[],
        propertyScope: string,
        displayRecommended: boolean,
    ): any {
        const result = [];
        if (!displayRecommended) {
            return properties;
        } else {
            if (propertyScope === undefined || propertyScope === 'NONE') {
                return properties;
            } else {
                properties.forEach(property => {
                    if (
                        !property.propertyScope ||
                        property.propertyScope === propertyScope
                    ) {
                        result.push(property);
                    }
                });
            }
            return result.length > 0 ? result : properties;
        }
    }
}
